Malicious PDF — malware analysis report

Static analysis result for SHA-256 c7c6b6b7cb753b41…

MALICIOUS

PDF

32.4 KB Created: 2020-08-14 04:12:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c1640e635400dbb456767e1bbc983c61 SHA-1: 6c68aa64e3c6005c8f78b7b69a80545e2dd21c28 SHA-256: c7c6b6b7cb753b4126ffae1a39c2aab68ca4e0c53ae60e2daf40b7126ae16bb9
202 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a link that redirects to malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body and embedded URLs suggest a lure to download a prospectus, which is a common tactic for phishing or malware delivery. The PDF_SEO_LINK_FARM heuristic further indicates a large number of links, many hosted on Shopify, likely to obscure the malicious redirector.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.ru/wb?keyword=unisa%20postgraduate%20prospectus%202019%20pdf%20download In PDF document text
    • http://nowesula.prairieartscenter.org/uploads/1/3/0/7/130776023/6228746.pdfIn PDF document text
    • http://rozatosef.riveroflifemedical.org/uploads/1/3/1/3/131384714/bozaweluw.pdfIn PDF document text
    • http://nadiz.ayraibeauty.ca/uploads/1/3/1/4/131412032/373985.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8890/3325/files/selegebid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5970/8058/files/70278428549.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6422/2101/files/rilab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2135/3639/files/31256492189.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4462/5822/files/65446264189.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9091/2159/files/brinjal_grafting.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/2204/6616/files/joint_venture_agreement.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4946/0636/files/14016073103.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4618/1787/files/besas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7567/9896/files/hippocampal_synaptic_plasticity_spatial_memory_and_anxiety.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/tagesagebog.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 1

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000040c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x40C3 5888 bytes
SHA-256: 7f84d34a380b1c2e573770d1fb0e265d999ded00fbe27a6f25bc9d270cb85be8
font_01_sfnt_off000054eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x54EB 9284 bytes
SHA-256: eeb89ec0b65d84fe04e5362935377224aa48cf2abfdcf5be1e0e258267bcc439

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